The employee resigned breaks the contract that binds him to his employer. Discover in this case the different options for resigning.
The resignation is a mode of break which relates to the work contracts at unlimited duration. Although one can present it in any form, it is that recommend to you to choose the registered letter with acknowledgement of receipt.
Before leaving your employment, you must respect the starting notice fixed by the collective agreement of your company.
Note that apart from some special cases, the resignation does not give the right to unemployment benefits.